B-meson production at forward and backward rapidity in p+p and Cu + Au collisions at sNN=200 GeV

C. Aidala et al. (PHENIX Collaboration)
Phys. Rev. C 96, 064901 – Published 4 December 2017

Abstract

The fraction of J/ψ mesons which come from B-meson decay, FBJ/ψ, is measured for J/ψ rapidity 1.2<|y|<2.2 and pT>0 in p+p and Cu+Au collisions at sNN = 200 GeV with the PHENIX detector. The extracted fraction is FBJ/ψ=0.025±0.006 (stat) ± 0.010(syst) for p+p collisions. For Cu+Au collisions, FBJ/ψ is 0.094 ± 0.028(stat) ± 0.037(syst) in the Au-going direction (2.2<y<1.2) and 0.089 ± 0.026(stat) ± 0.040(syst) in the Cu-going direction (1.2<y<2.2). The nuclear modification factor, RCuAu, of B mesons in Cu+Au collisions is consistent with binary scaling of measured yields in p+p at both forward and backward rapidity.

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  • Received 13 February 2017

DOI:https://doi.org/10.1103/PhysRevC.96.064901

©2017 American Physical Society

Physics Subject Headings (PhySH)

Nuclear Physics

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Vol. 96, Iss. 6 — December 2017

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